Elsa could be the ruler of Arendelle, but also a POH.
Governing a country is different from being a Princess of a pure heart.
Disney clearly doesn't feel Pocahontas is as bad as people here do. Pocahontas still gets regular re-releases, promotion, and merchandise, unlike Hercules, The Hunchback of Notre Dame, The Black Cauldron, Treasure Planet, Atlantis, etc. I don't think it will be a world in KH3, but it has the potential to be really fun, I'll admit. And I'd much rather have Pocahontas as one of the new PoH over Merida or Mulan.
I'm not saying the controversies surrounding Pocahontas aren't justified, but many Disney films have had controversies and criticism to varying degrees. YMMV
Unfortunately, Disney has a shame of movies that slipped through the box office's cracks. If you had a lukewarm success or even just okay, it's really not good enough. Disney will shove it underneath a rug and act like the movie was a humiliation. Pocahontas did less than Lion King, but it was still a hit, while Hercules, HOND, Treasure Planet and Atlantis not so much.
The only way to mend this is to have the movie be vindicated by higher DVD/ Bluray/ Merch sales, and Disney will put it in the "favorite child " list. This happened to Fantasia, which failed hard in the '40's, Pinocchio, Bambi and Alice in Wonderland.
Pocahontas is conversational, but judging by documentaries on Youtube, it's always has been. Disney won't mind unless there's an uproar or it stops being successful. I get the feeling that Disney knows that their movies can be either a loved treasure or a miss, depending on the generation. If Atlantis, Hercules etc become bigger news, they'll be prepared for it. But Pocahontas did better in the box office, so that movie is going to be treated better by the company.